Funny how the perspective here is different than previous "detailing" forums i have visited in the past. I had my old BMW in for a multi day service a few years ago and had a loaner BMW. I used the opportunity to try some things out and caught holy living h*** from some on that forum. Comments like "how could you jeopardize someone else's property" and "did you have permission from the dealer to do something like that?". I made that loaner, like you, better than when they released it to me and returned it in much better condition.
I still am shocked at the response i received from other detailing enthusiasts and didn't "jeopardize" anything. It's refreshing to hear a similar persepctive to mine here.